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W. Urbaniak-Domagała, G. Urbańczyk

Effect of low-temperature plasma on the electrical properties of poly(ethylene terephthalate) film

Polimery 1988, No 6, 224

DOI: dx.doi.org/10.14314/polimery.1988.228


The effect of the time (1—30 minutes) of action of low-temperature plasma on some selected electrical properties of the domestic Estrofol PET film has been investigated. Film has been modified in plasma excited in air medium by means of a high frequency field in type E discharge (E — 8.6 eV, n = 2.1 X 107 cm” 3). It has been found that under the action of plasma both the volume resistivity (by about 47%) and the surface resistivity (by about 28%) of the film are decreased, whereas their long-term polarization in electrostatic field increases. The effect of plasma on these properties in the highest in the initial period (1 to 3 minutes) of plasma action. Modification of PET film by plasma lowers the susceptibility of the film to static electrization in frictionless contact with metals (Al, Au). The above discussed changes in electrical properties of plasma-treated PET films have been explained on the basis of results of investigations on the changes in free-energy excess of PET-film surface during its plasma modification.

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